Here's an old demo using the Ample Bass articulations. It uses the map in RC to play the articulations in the midi from the Ample library or any you may add manually. So you can import Guitar Pro Tabs into Ample then save them as phrases in RC with all the articulations that can be dropped into any chord progression and play all the articulations over any chord or octave.

https://www.dropbox.com/s/k7q8ikg7e3pgx0g/Biab-RC-Ample-Bass.mp4?dl=0

Biab-RapidComposer-Ample Bass Win/Mac